Yabla video uses of

他们 tāmen
发现 fāxiàn
zài
陵墓 língmù
nèi
de
彩色 cǎisè
壁画 bìhuà
de
颜料 yánliào
jiù
含有 hányǒu
shuāng
děng
毒物 dúwù
They discovered arsenic and other posionous substances in the paint on the tomb's walls.